laptop image tiers, devshell, partition preserve, cleanup

Images:
- laptopUpstream: bare OS install with AHCI, no templates
- laptopSlim: essentials only (debloat, registry tweaks)
- laptop: full (essentials + all apps)
- win10/win11 images use rec for self-references

CLI:
- preserve recovery partition (4) during disk copy
- expand partition 3 up to partition 4 boundary
- remove VNC CLI flag (use vncDisplay in nix configs instead)

Flake:
- add devShell with vmix alias and PS1 prompt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

flake.nix

@@ -27,5 +27,20 @@
       type = "app";
       program = "${self.packages.${system}.default}/bin/vmix";
     };
+
+    devShells.${system}.default = pkgs.mkShell {
+      shellHook = ''
+        # vmix CLI available as local flake
+        export VMIX_FLAKE="path:$PWD"
+        alias vmix='nix run "$VMIX_FLAKE" --'
+
+        # bash prompt
+        PROMPT_COMMAND='PS1_CMD1=$(git branch --show-current 2>/dev/null)'; PS1='\[\e[1;7m\]$?\[\e[0m\] \[\e[2m\]\A\[\e[0m\] \[\e[91m\]\u@\h\[\e[0m\] \[\e[92;1m\]\w\[\e[0m\] \[\e[96m\]''${PS1_CMD1}\[\e[0m\] \[\e[1;2m\]$\[\e[0;1m\] \[\e[0m\]'
+      '';
+      buildInputs = with pkgs; [
+        bashInteractive
+        git
+      ];
+    };
   };
 }

lib/images/windows/templates/default.nix

@@ -44,6 +44,26 @@ in rec {
 
   # Bundles — reusable template lists for common use cases
   bundles = {
+    # Essentials only: debloat + registry tweaks, no apps
+    laptopSlim = [
+      essentials.removeIE
+      essentials.removeWMP
+      essentials.removeEdge
+      essentials.vcppRuntimes
+      essentials.bestPerformance
+      reg.disableTelemetry
+      reg.disableErrorReporting
+      reg.disableUpdates
+      reg.disableSmartScreen
+      reg.disablePrivacyTracking
+      reg.disableAI
+      reg.disableConsumerFeatures
+      reg.performanceTweaks
+      apps.thorium
+      apps.sevenZip
+    ];
+
+    # Full: essentials + apps
     laptop = [
       essentials.removeIE
       essentials.removeWMP

lib/images/windows/win10/images.nix

@@ -2,7 +2,7 @@
 # Pipeline: makeImage (Audit Mode) → essentials → apps → registry → generalize
 { pkgs, lib, system, windows, upstreamISOs, ... }:
 with windows;
-{
+rec {
   ltsc = rec {
     upstream = makeImage {
       name = "win10-ltsc-2021";
@@ -32,10 +32,14 @@ with windows;
     withAMDGPU = customizeImage basic templates.essentials.amdGpuDrivers;
   };
 
-  laptop = customizeImageFold (makeImage {
+  laptopUpstream = makeImage {
     name = "win10-ltsc-2021-laptop";
     upstreamISO = upstreamISOs.win10-ltsc-2021;
     productKey = "M7XTQ-FN8P6-TTKYV-9D4CC-J462D";
     useAHCI = true;
-  }) templates.bundles.laptop;
+  };
+
+  laptopSlim = customizeImageFold laptopUpstream templates.bundles.laptopSlim;
+
+  laptop = customizeImageFold laptopUpstream templates.bundles.laptop;
 }

lib/images/windows/win11/images.nix

@@ -2,7 +2,7 @@
 # Pipeline: makeImage (Audit Mode) → essentials → apps → registry
 { pkgs, lib, system, windows, upstreamISOs, ... }:
 with windows;
-{
+rec {
   ltsc = rec {
     upstream = makeImage {
       name = "win11-ltsc-2024";
@@ -36,12 +36,18 @@ with windows;
     withAMDGPU = customizeImage basic templates.essentials.amdGpuDrivers;
   };
 
-  laptop = customizeImageFold (makeImage {
+  laptopUpstream = makeImage {
     name = "win11-ltsc-2024-laptop";
     upstreamISO = upstreamISOs.win11-ltsc-2024;
     productKey = "M7XTQ-FN8P6-TTKYV-9D4CC-J462D";
     bypassRequirements = true;
     useAHCI = true;
     windowsVersionForVirtioDrivers = "w11";
-  }) (templates.bundles.laptop ++ [ templates.reg.disableUCPD ]);
+  };
+
+  laptopSlim = customizeImageFold laptopUpstream
+    (templates.bundles.laptopSlim ++ [ templates.reg.disableUCPD ]);
+
+  laptop = customizeImageFold laptopUpstream
+    (templates.bundles.laptop ++ [ templates.reg.disableUCPD ]);
 }